Prune and upload doesn't work anymore - LUA error and parsing error

[Klardata]

Since a few days I can't prune anymore, I get an error:

Date: 2021-03-29 15:01:22
ID: 1
Error occured in: Global
Count: 1
Message: ...rface\AddOns\CensusPlusClassic\CensusPlusClassic.lua line 3260:
bad argument #1 to 'sub' (string expected, got nil)
Debug:
[C]: ?
[C]: sub()
...rface\AddOns\CensusPlusClassic\CensusPlusClassic.lua:3260: CENSUSPLUS_PRUNEData()
[string ":OnClick"]:1:
[string ":OnClick"]:1
Locals:

Also can't upload the file anymore
"Parsing error - imvaid times/character format"

Someone got an idea whats wrong and how to fix it?